Active site
A notched pocket in a catalyst surface that a matching accent substrate settles into and then leaves as product.
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Catalysis
15 animationsBed regeneration
A column of fouled bed cells cleared from the bottom up by an accent regeneration front sweeping to the top.
CSSCatalytic cycle
A four-station ring around which an accent carrier travels once per cycle, releasing a product pip and returning the catalyst unchanged.
CSSCompetitive inhibition
An accent substrate runs down its approach lane to a site already held by an inhibitor, checks against it and is turned away.
CSSEnantioselectivity
A chiral site feeding two mirrored product columns where the accent favoured hand fills and its mirror stops at a stub.
CSSLigand exchange
A square-planar metal centre where the spectator ligand swings clear into solution and the accent substrate binds into the vacated site.
CSSLight-off
A conversion-against-temperature curve traced out by an accent head sweeping up through the light-off knee and back.
CSSLowered barrier
An energy profile where the accent catalysed path opens a lower saddle beneath the recessive uncatalysed hump and a bead crosses it.
CSSPromoter
An activity dial whose needle swings up as the accent promoter pellet runs in along the feed rail and docks.
CSSReactor packing
A packed column of pellets with accent feed running down the annular channels either side of the stack.
CSSSelectivity split
A feed duct branching into two product channels where the accent wanted branch holds its share against the recessive side branch.
CSSSintering
Four dispersed accent particles on a support creep together and coalesce into one coarse grain, losing the dispersion.
CSSSite poisoning
Five active-site posts on a rail take contaminant caps one after another while the activity meter beside them falls.
CSSSurface coverage
A saturated catalyst surface where one accent adsorbate desorbs into the gas phase as another lands on the vacant site.
CSSTandem cascade
Two catalyst beds in series through which an accent species passes, handed on as feed, intermediate and product.
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